It shows that you need to call external Java libraries with special functions
to create "function" object (and such definition can be arbitrary complicated, you can use even if statement as in a program code).

It shows that you need to call external Java libraries with special functions
to create "function" object (and such definition can be arbitrary complicated, you can use even if statement as in a program code).

best, Sergei

The problem has been solved with your help.
Thank you very much, Sergei.